Improvement in stop-motions for winding and twisting machinery



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D KSMITH.

Stop-Motion for Wiridiflg and Twisting Machinery. N0; l98,956.' Patented J'an. 8,1878.

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METERS, PHO O LiTHOG APHER. WKSHINQTOH. D

'2 Sheets-Sheet. 2.

D.-SMITH. Stop-Motion for Winding and Twigting Machinery.

Patented Jan. 8, 1878.

To an whom it may concern:

UNITED STATES PATENT OFFICE;

DEXTER SMITH, OF SPRINGFIELD, MASSACHUSETTS.

IMPROVEMENT lN STOP-MOTIONS FOR WINDING AND TWISTINGMACHINERY.

Specification forming part of Letters Patent No. 198,956, dated January 8, 1878; application filed 7 September 7, 1877. I

Be it known that I, DEXTER SMITH, of Springfield, in the State 'of Massachusetts, have invented a new and useful StopMotion for Winding and 'lwisting Machinery; and

that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, making a part of.

this specification, and to the letters of reference marked thereon.

The object of my invention is to automatically stop the motion of a winding, twisting,

or doubling machine by the breaking or loosening of the thread while being wound or twisted.

My invention consists, first, of a movable catch-bolt attached to a support, operating, in connection with a catch lever, to throw a latch out of position and permit a shipper-rod to drop and move the shipping-lever, which shifts I set the bolt back into position when the rod drops, so that when the rod is raised again the bolt and catch lever will have been already automatically set for further action.

Italso consists of a rod connected with the catch-lever, upon which weighted levers arev arranged to-fall to disconnect the catch-lever from the bolt, said weighted levers having an eye at the opposite end from the weight,

through which the thread passes from the bob-' bin to the spool, the weighted end of each 1ever being held up when the thread is taut and dropped when the thread is broken or 1oos ened, all which will be more fully hereinafter described.

Figure I is a front elevation of myinvention. Fig. II is a plan view ofthe same. Fig. III is a vertical section at line Nof Fig. II. Fig. IV is avertical section upon the same line of the shipping-rod, showing a modification of the latch; and Fig. Vis a plan view of the same modification.

In the drawings, A represents the frame of vided at one end with a catch, a, which-is located over the bolt E, and just in rearof the catch 1) on saidbolt when the latter is thrown in or forward, so that when in this'position the two catches a and!) will engage with each other, the catch endof the lever D being thrown down slightly for that purpose by a spring, f, or other equivalent means.

The shipping-rod G isheld by the frame in a'vertical position, so as to move freely upor down, and is provided with a pin, F, sliding freely therein, which should, however, have a limited motion secured either by a small pin or other suitable means. v

The shipping-rod G is also provided with a latch, Gr,\which .may be *pivotedto the rod, and hang down on its rear side, and held in so as to rest upon a ledge, o, by means of a spring, asshown in Fig. III; or the latch may be made inonepiece with and uponthe rear end of the sliding pin F, as shown clearly in' =Figs.IV andV.

A-cam orinclined projection, F, is made on the'front side of the shipping-rod G, and the slidingpin Fis so located in the rod 0 that whentherod is upthe pin F is just inrear of the bolt E and the cam.F is just above it.

The shipping-lever (J'is connected at one end with the lower end of theshipping-rod, and is pivoted to the frame at g, with aneye at the other end, through which runs thebelt which passes around the pulley n to revolvethe spoolL'. A treadle-bar, B, is pivotedito the frame, andis connected to the shipping-lever bya bar, 13. If the shipping-rod G is not sufficiently heavy to vdrop quickly of itself, a weight, (3",may be added. To the front end of the lever -D is attached arod, h, having a horizontal arm at its upper end, as shown clearly in Fig. II, and this rod may extend downward, with a horizontal arm atits lower end, as shown in Fig. I. To the frame at h,

in front of the lever D and upper horizontal bar h attachedtheretm'is pivoted one or-more levers, I, having a weight, I, at the rear end,

v 1os,95c

'and an eye, 6, ,at thefront end,'through which eye the thread passes from thebobbin placed at A to the spool below, as will be explained hereinafter. the frame A, in front of the horizontal arm, at the lower end of the rodh.

The ring-holder L and traveler 7c are made in the usual way, and supported upon and operated by the wave rods L, in} the ordinary manner.

The feed-roll H is hung in suitable bearings in the frame, and thepresser-roll is hung in the forked end of a lever, H, pivoted in the frame. A pin, s,'is fixed in the shipping-rod O at such height above the lever H that when" the shipping-rod drops the pin .9 strikes upon the rear end of the lever, and raises the presserroll sufficiently tov relieve the pressure from the thread passing around the feed-roll H beneath. I

The operation of my inventionis as follows: One or. more bobbins of thread are placed upon the spindles at A, and the thread there'- from passed down through the eyes i of the upper levers I, through the eyes i and i, and partially .around the presser roll H,

.thence around the feed-roll H, and through the eye it behind the feed-roll, and thence through the eye i of the lower lever I, and through the traveler k to thespool L. As the machine is set inmotion by a belt passing around a pulley on the feed-roll shaft and by the belt on the pulley n the thread is unwound from the bobbins at A and wound upon the spool'L, any desired number of threads being thus twisted together and wound 1 upon the spool L, the threads, when i drawn taut, drawing down theends i of .the levers I, as shown in black lines in Fig. III, and raising their weighted ends. If, however, the thread, or one ofthe threads, should break above the feed-roll H, the eye end of the lever I, through which the thread passes, is quickly released, and the weighted end of the lever drops and strikes upon the horizontal arm of the rod h at its. upper end, quickly throwing up the catch a on the opposite end of the lever D, and disengaging it from the catch b on the bolt E, and the bolt, being actuated by a spring, 0, or by a weight and pulley, is thrown to the rear against the pin F, driving that also rearward against the latch G, forcingthat off the ledge o, and allowing the shipping-rod G to drop, moving the front end of the shipping-lever upward, and shifting the belt from the fixed pulley n to the loose pulley a above, and automatically stopping the machine.

As the shipping-rod 0, drops the inclined projection or cam 'F on the'rod comes in contact withv the projecting rear end of the bolt E, and forces it forward again, so that the catch a-thereon engages with the catch 1) on the rear end of the lever D, and the bolt is thereby held in its forward position. When the rod 0 drops, the pin 8 strikes upon the A similar lever, I, is pivoted to.

er-roll H away from the feed-roll H and from the thread wound thereon, and the thread is then no longer fed down to the spool L.... The.tl1read then being connected, the rod 0 is raised by placing the foot on the treadlebar B and pressing it down, and the machine recommences its operation.

Should the traveler k fiy out of its ring, or the thread break or become loose below the feed-roll H from any cause, the eye end of the lower lever I quickly flies upward, and the weighted end falls upon the horizontal arm at the lower end of the rod h, and the shipperrod falls, as before, by the immediate disengagement of the catches a and b, automatically stopping the machine, as before. I To adapt the machine to the winding and twisting of exceedingly fine and delicate threads,

as silk, the catches a and b of the bolt E and lever D may be adjusted to engage with each other to any desired degree. This is accomplished by-a set-screw, 6, turned through the end of the lever and against the bolt E, or against its catch, and vice versa 5 or this adjustment may be accomplished so that the catch end of the lever D shall have a limited vertical movement, to cause the catches a and b to engage with each other to a greater or less degree, and the two catches to be disengagedby aheavier or lighterblow of the weighted levers I, according to the strength of the thread being wound. I

When adjusted for a very fine thread, the catches a and b engage very little, so that a very light stroke of the-weighted end of the lever I will disengage the catches, and the stroke of the levers I upon the horizontal part of the rod h may be further regulated by moving the weights I along the lever, either in or out. Y

In the modification shown in Figs. 1V and V the latch G is made upon the end of the pin F, and extends out on each side, so that when the pin is forced back it passes down,when

the rod drops, between the ledges 0 on each side of the pin, and in rear of the rod 0, and the rear sides of these ledges are beveled or inclined, as shown clearly in Fig. IV, so that Whenthe rod is moved up again the latch rides up against this incline on the rear side of the lodges, and the pin and latch are forced in to rest upon these, ledges again by the spring 00, or by a weight and pulley, if more convenient.

If desirable, the bolt E may be limited in.

ping-rod O, substantially as and for the purand lever D, whereby, when the said shipposes set forth. ping-rod 0 falls, the catch-bolt E is thrown 3. The tripping or weighted levers I, in forward and oaused to engage with the catchcombination with the rod h, the lever D, the lever D, substantially as described. catch-bolt E, spring a, latch-pin F, and shipping mechanism, substantially as and for the DEXTER SMITH purposes set forth. 7 Witnesses:

4. The shipping-rod 0, provided with the i T. A. CURTIS,

cam F, in combination with the catch-bolt E G. E. BUQKLAND. 

